Home / 1,220,479.31-1,684,360.89-676,785.57

Finding the Fourth Proportional to 1,220,479.31, 1,684,360.89 and 676,785.57

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Solution

The fourth proportional to 1,220,479.31, 1,684,360.89 and 676,785.57 is: 934,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,479.31 : 1,684,360.89 = 676,785.57 : x
  2. Step 2: Convert to fraction form
    1,220,479.31/1,684,360.89 = 676,785.57/x
  3. Step 3: Cross multiply
    1,220,479.31x = 1,684,360.89 × 676,785.57
  4. Step 4: Simplify right side
    1,220,479.31x = 1,139,951,145,024.36
  5. Step 5: Solve for x
    x = 1,139,951,145,024.36/1,220,479.31
  6. Step 6: Final answer
    x = 934,019.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.